A new criterion for evaluating the glass-forming ability of bulk glass forming alloys

被引：0

作者：

Yuan, Zi-Zhou ^{[1
]}

Bao, Shi-Lei ^{[1
]}

Lu, Ye ^{[1
]}

Zhang, Da-Peng ^{[1
]}

Yao, Lin ^{[1
]}

机构：

[1] State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, 730050, China

来源：

Journal of Alloys and Compounds | 2008年 / 459卷 / 1-2期

关键词：

Based on the classical theory of nucleation and growth; we propose a dimensionless criterion; β; expressed by TxTg/(Tl - Tx)2; with Tg; the glass transition temperature; Tx; the onset of crystallization temperature and Tl; the liquidus temperature for evaluating the glass-forming ability (GFA) of bulk metallic glasses (BMGs). A survey of the readily available experimental data associated with the thermal analysis of various BMGs show that the new criterion; is statistically better than other currently used criteria; such as γ (=Tx/(Tl + Tg)) and Trg (=Tg/Tl); and also better than newly proposed criteria; such as δ (=Tx/(Tl - Tg)) and φ (=Trg((Tx - Tg)/Tg)0.143) in reflecting the GFA. It is also demonstrated that the β criterion can be used as a guideline for exploring new bulk metallic glass formers in a wide range of BMGs. © 2007 Elsevier B.V. All rights reserved;

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摘要：

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页码：251 / 260

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